物理学 5-6静电场的环路症理电势能 第五版 三电势能( Electric potential energy) 静电场是保守场,静电场力是保守力静电场力 所做的功就等于电荷电势能增量的负值. Electrostatic field is a conservative field, electrostatic force is conservative force. The work done by electrostatic force is equal to the negative increment of the electric potential energy of charge B A→B E.d=-(EpB-Ep)==△E WB>O, EDB EpA WAR <O, ER> EDA 原子物理中能量单位leV=1602×10-J 第五章静电场 4/6第五章 静电场 物理学 第五版 5-6 静电场的环路定理 电势能 4/6 三 电势能(Electric potential energy) 静电场是保守场，静电场力是保守力.静电场力 所做的功就等于电荷电势能增量的负值. 0 p p p d ( ) B A B B A A W q E l E E E → =  = − − = −  p p 0, W E E AB B A   p p 0, W E E AB B A   Electrostatic field is a conservative field, electrostatic force is conservative force. The work done by electrostatic force is equal to the negative increment of the electric potential energy of charge 1eV 1.602 10 J −19 原子物理中能量单位 = 